Component Handles
in [Visual Basic]
|
Prev: Centralised MsgBox
Next: Updating the VB EXE
From: xytsrm on 6 Oct 2009 00:31 I have a form with three visable items: a textbox, a label, and a button. I'm simply trying to retrieve the handle of the textbox. I've used FindWindow to retrieve the handle of the form, and have been using FindWindowsEx to try and retrieve the handle of the Textbox. This works if the textbox is the only entity on the form, but fails when there are other items on the form. The only way I have been able to get FindWindowEx to return anything is with the following format: FindWindowEx (hndl, vbNullString, vbNullString). According to "Appleman" I should be able to enter the title of the item in the third parameter (eg. "myTextBox"), but that only returns 0, I've tried entering "TextBox" for the class in the second parameter, but again that returns 0. This seems like it should be easy BUT? Does anyone have any suggestions? X.
From: Rick Rothstein on 6 Oct 2009 03:04 I may be missing something in your question, but why doesn't the hWnd property to the TextBox give you what you want? TextBoxHandle = myTextBox.hWnd -- Rick (MVP - Excel) "xytsrm" <xytsrm(a)discussions.microsoft.com> wrote in message news:5B61CEBD-DEE4-446B-9127-EFCFE0CD6C0F(a)microsoft.com... >I have a form with three visable items: a textbox, a label, and a button. > I'm simply trying to retrieve the handle of the textbox. I've used > FindWindow to retrieve the handle of the form, and have been using > FindWindowsEx to try and retrieve the handle of the Textbox. This works > if > the textbox is the only entity on the form, but fails when there are other > items on the form. The only way I have been able to get FindWindowEx to > return anything is with the following format: > > FindWindowEx (hndl, vbNullString, vbNullString). > > According to "Appleman" I should be able to enter the title of the item in > the third parameter (eg. "myTextBox"), but that only returns 0, I've tried > entering "TextBox" for the class in the second parameter, but again that > returns 0. > > This seems like it should be easy BUT? Does anyone have any suggestions? > > X. >
From: Eduardo on 6 Oct 2009 06:51 Rick Rothstein escribió: > > I may be missing something in your question, but why doesn't the hWnd > property to the TextBox give you what you want? > > TextBoxHandle = myTextBox.hWnd > Yeah, but it's too easy...
From: xytsrm on 6 Oct 2009 08:13 Sorry I guess I wasn't as clear as I could be; the "FindWindow" & "FindWindowEx" functions are being issued from another App. I have been able to get the correct handles by eliminating the button, and although there is another widget with a handle property the textbox is being seen first. While I don't really need the button [I was only using it as an Exit, I can use the Unload event just as well] I would still like to know if there is a way to always get the handle of a specific widget using the FindWindowEx function. The description of the function suggests that it's should be possible by passing either the Name of the widget in the fourth parameter, or at least the class name in the third parameter. X. "Rick Rothstein" wrote: > I may be missing something in your question, but why doesn't the hWnd > property to the TextBox give you what you want? > > TextBoxHandle = myTextBox.hWnd > > -- > Rick (MVP - Excel) > > > "xytsrm" <xytsrm(a)discussions.microsoft.com> wrote in message > news:5B61CEBD-DEE4-446B-9127-EFCFE0CD6C0F(a)microsoft.com... > >I have a form with three visable items: a textbox, a label, and a button. > > I'm simply trying to retrieve the handle of the textbox. I've used > > FindWindow to retrieve the handle of the form, and have been using > > FindWindowsEx to try and retrieve the handle of the Textbox. This works > > if > > the textbox is the only entity on the form, but fails when there are other > > items on the form. The only way I have been able to get FindWindowEx to > > return anything is with the following format: > > > > FindWindowEx (hndl, vbNullString, vbNullString). > > > > According to "Appleman" I should be able to enter the title of the item in > > the third parameter (eg. "myTextBox"), but that only returns 0, I've tried > > entering "TextBox" for the class in the second parameter, but again that > > returns 0. > > > > This seems like it should be easy BUT? Does anyone have any suggestions? > > > > X. > > > >
From: Mike Williams on 6 Oct 2009 08:53
"xytsrm" <xytsrm(a)discussions.microsoft.com> wrote in message news:59C39CFC-E2C8-48D0-88D3-99513C890D4A(a)microsoft.com... > Sorry I guess I wasn't as clear as I could be; the "FindWindow" > & "FindWindowEx" functions are being issued from another > App [some stuff snipped] I would still like to know if there is > a way to always get the handle of a specific widget using the > FindWindowEx function. If it is a VB6 Form and if you want a specific textbox (and if you know it's name) then you can pass the name in the fourth parameter (for example, "TextBox1"). If you just want the first TextBox it finds then you can pass the class name in the third parameter ("ThunderTextBox") and a null string in the fourth. Ideally I suppose you would pass both the class name and the desired textbox name. Mike |